<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Index</title>
    <link rel="stylesheet" href="Bootstrap/css/bootstrap.css">
    <!-- <style>
        .row1{
            margin-top: 28px;
        }
    </style> -->
</head>

<body>
    
    <div class="container">
        <div class="row">
            <nav class="navbar navbar-expand-lg navbar-light bg-light fixed-top">
                <div class="container-fluid">
                    <a class="navbar-brand" href="#">Navbar</a>
                    <button class="navbar-toggler" type="button" data-bs-toggle="collapse"
                        data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent"
                        aria-expanded="false" aria-label="Toggle navigation">
                        <span class="navbar-toggler-icon"></span>
                    </button>
                    <div class="collapse navbar-collapse" id="navbarSupportedContent">
                        <ul class="navbar-nav me-auto mb-2 mb-lg-0">
                            <li class="nav-item">
                                <a class="nav-link active" aria-current="page" href="#">Home</a>
                            </li>
                            <li class="nav-item">
                                <a class="nav-link" href="#">Link</a>
                            </li>
                            <li class="nav-item dropdown">
                                <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button"
                                    data-bs-toggle="dropdown" aria-expanded="false">
                                    Dropdown
                                </a>
                                <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
                                    <li><a class="dropdown-item" href="#">Action</a></li>
                                    <li><a class="dropdown-item" href="#">Another action</a></li>
                                    <li>
                                        <hr class="dropdown-divider">
                                    </li>
                                    <li><a class="dropdown-item" href="#">Something else here</a></li>
                                </ul>
                            </li>
                            <li class="nav-item">
                                <a class="nav-link disabled">Disabled</a>
                            </li>
                        </ul>
                        <form class="d-flex" role="search">
                            <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
                            <button class="btn btn-outline-success" type="submit">Search</button>
                        </form>
                    </div>
                </div>
            </nav>
        </div>
        <div class="row g-2 mt-5 row1">
            <div class="col-sm-4">
                <img src="holder.js/100px200?theme=sky" alt="holder图像">
            </div>
            <div class="col-sm-4">
                <img src="holder.js/100px800?theme=vine" alt="holder图像">
            </div>
            <div class="col-sm-4">
                <img src="holder.js/100px200?theme=social" alt="holder图像">
            </div>
        </div>
    </div>
    <script src="Bootstrap/js/bootstrap.bundle.js"></script>
    <script src="js/holder.js"></script>
</body>

</html>